1. Institute of Metabolic Science and Department of Medicine (M.C., M.A., E.S., C.M., M.G., V.K.C.) University of Cambridge, Addenbrooke’s Hospital, Cambridge CB2 0QQ, United Kingdom;
2. Institut National de la Santé et de la Recherche Médicale U845 and Pediatric Endocrinology and Gynecology (M.C.), Necker-Enfants Malades Hospital, Assistance Publique des Hopitaux and Université Paris Descartes, 75015, Paris, France;
3. Cambridge Institute for Medical Research (U.M., F.L.R.), University of Cambridge, Addenbrooke’s Hospital, Cambridge CB2 0QQ, United Kingdom;
4. Fachärztin fûr Humangenetik (S.D.), Genetische Beratungsstelle, 99084 Erfurt, Germany;
5. Department of Biochemistry (J.S.), University of Leicester, Leicester LE1 7RH, United Kingdom